public class Example3_5 {
	public static void main (String args[]) {
		long sum = 0,a = 8,item = a,n = 12,i=1;
		for(i=1;i<=n;i++) {
			sum=sum+item;
		        item=item*10+a;
		}
	        System.out.println(sum);
	}
}
